Description

Operands of the LogicExpression should implement an Operand interface instead of just being generic objects. This makes Operand types much more precise. We would have OperandDate for Date, Duration would implement Operand, OperandNumeric for Float, Double, and Integer, OperandText for String, OperandConcept for Concept, LogicExpression implements Operand, and Result implements Operand. The operands in a LogicExpression become of type Operand instead of type Object. We would need to update all the instanceof processing of operands in the DAOs.